diff --git a/src/config/schema.help.ts b/src/config/schema.help.ts
index 4e266eb2bd0..392043c5ae5 100644
--- a/src/config/schema.help.ts
+++ b/src/config/schema.help.ts
@@ -815,6 +815,8 @@ export const FIELD_HELP: Record<string, string> = {
     'Selects the embedding backend used to build/query memory vectors: "openai", "gemini", "voyage", "mistral", "ollama", or "local". Keep your most reliable provider here and configure fallback for resilience.',
   "agents.defaults.memorySearch.model":
     "Embedding model override used by the selected memory provider when a non-default model is required. Set this only when you need explicit recall quality/cost tuning beyond provider defaults.",
+  "agents.defaults.memorySearch.outputDimensionality":
+    "Optional embedding dimension override for providers and models that support configurable output size, such as Gemini embedding v2. Use this only when you intentionally need a smaller vector footprint or strict dimension compatibility with an existing memory index.",
   "agents.defaults.memorySearch.remote.baseUrl":
     "Overrides the embedding API endpoint, such as an OpenAI-compatible proxy or custom Gemini base URL. Use this only when routing through your own gateway or vendor endpoint; keep provider defaults otherwise.",
   "agents.defaults.memorySearch.remote.apiKey":
diff --git a/src/config/schema.labels.ts b/src/config/schema.labels.ts
index 4e0919cf975..4c61cfbe1fb 100644
--- a/src/config/schema.labels.ts
+++ b/src/config/schema.labels.ts
@@ -332,11 +332,11 @@ export const FIELD_LABELS: Record<string, string> = {
   "agents.defaults.memorySearch.multimodal": "Multimodal Memory Search",
   "agents.defaults.memorySearch.multimodal.enabled": "Enable Multimodal Memory Search",
   "agents.defaults.memorySearch.multimodal.modalities": "Multimodal Memory Modalities",
-  "agents.defaults.memorySearch.multimodal.maxFileBytes":
-    "Multimodal Memory Max File Size (bytes)",
+  "agents.defaults.memorySearch.multimodal.maxFileBytes": "Multimodal Memory Max File Size (bytes)",
   "agents.defaults.memorySearch.experimental.sessionMemory":
     "Memory Search Session Index (Experimental)",
   "agents.defaults.memorySearch.provider": "Memory Search Provider",
+  "agents.defaults.memorySearch.outputDimensionality": "Memory Search Output Dimensionality",
   "agents.defaults.memorySearch.remote.baseUrl": "Remote Embedding Base URL",
   "agents.defaults.memorySearch.remote.apiKey": "Remote Embedding API Key",
   "agents.defaults.memorySearch.remote.headers": "Remote Embedding Headers",